In a purely capacitive AC circuit, the current leads the voltage by how much pha

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Question: In a purely capacitive AC circuit, the current leads the voltage by how much phase angle? (2023)

Options:

Correct Answer: 90 degrees

Exam Year: 2023

Solution:

In a purely capacitive circuit, the current leads the voltage by 90 degrees.

In a purely capacitive AC circuit, the current leads the voltage by how much phase angle? (2023)

In a purely capacitive AC circuit, the current leads the voltage by how much phase angle? (2023)

Step 1: Understand what a purely capacitive AC circuit is. It means the circuit only has a capacitor and no resistors or inductors.
Step 2: Know that in AC circuits, voltage and current can be out of sync, which is called a phase difference.
Step 3: In a purely capacitive circuit, the current (I) reaches its maximum value before the voltage (V) does.
Step 4: This means the current leads the voltage.
Step 5: The specific amount that the current leads the voltage in a purely capacitive circuit is 90 degrees.

Phase Relationship in AC Circuits – In a purely capacitive AC circuit, the current waveform reaches its peak 90 degrees before the voltage waveform, indicating that the current leads the voltage.